Delivery missed placed because no label on the outside

I ordered with MR D from Medley's Kitchen for Durban Curries Northriding, and when my order was delivered to the office, the packaging had no note, no reference number and no one knew who it was for. When I tried to contact MR D via their whatsapp line there was no agent to assist until about 38 minutes later. How does MR D allow restaurants to deliver anything not knowing who it is suppose to go to.